Field Math

Conduit Area Calculator

Calculate a conduit's internal cross-sectional area from its internal diameter (A = π × (d ÷ 2)²).

Box Volume Calculator

Calculate a box's volume from its length, width, and depth (V = L × W × D).

Fill Percentage Calculator

Calculate the fill percentage of an occupied area within a total area (Fill % = (Occupied Area ÷ Total Area) × 100).

Formula

Conduit Area Formula

The conduit area formula, its variables, and how internal diameter determines cross-sectional area.

Example

Field Math Examples

Worked, step-by-step examples calculating conduit area, box volume, and fill percentage.

Guide

Understanding Field Math

Practical geometry calculations electricians use in the field — conduit area, box volume, and fill percentage — and what they do and don't tell you.